Rocker side bearing.



a. A. JOHNSON.

ROCKER SIDE BEARING.

APPLI CATION FILED DEC. 5.1916.

129 l s Patented Jan. 7, 1919.

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ROCKER srnn BEARING.

readers.

Specification of Letters Patent.

Patented J anfi, 1919.

Application filed December 6, 1916. Serial No. 135,319.

To all who l-n: it may concern Be it known that 1, GEORGE A: JOHNSON, a citizen of the United States, v residing at Ghicago, in the county of" Cook and State of lllinois, have, invented a'i certain .new and "useful Improvement" in- Rocker Side Bearings, of which the following is a full, clear, concise', and exactdescription, reference being had to the accompanying drawings, forming a part of this specification.

My invention relates to improvements in rocker side bearings.

The object of this invention is to provide a rocker side bearing for railway cars, of simple and etlicient construction, composed of few parts, and wherein the rocker is returned to normal position after each actuation by two independently acting yielding means.

In the drawing forming a part of this specification, Figure 1 is an end elevation of portions of truck and body bolsters of a car showing my improvements in connection therewith. Fig. 2 is an enlarged sectional view taken on the line 2-2 of Fig. 1 illustrating the side bearing proper. And Fig. 3 is a section taken substantially on the line 3-3 of Fig. 2.

111 said drawing, 10 denotes the body bolster of the car to which is pivotally connected in the usual manner the truck bolster 11. As shown, the body bolster is provided with a projection 12 forming the upper bearing surface or plate of the side bearing and the side bearing proper, designated generally by the reference A, is shown as secured to the truck bolster.

The side bearing A, as shown, comprises a hollow base casting 13 having a lower horizontal wall 14, parallel upstanding side walls 1515 and upwardly and inwardlyinclined end walls 16-16, the latter ter1ninating at their upper ends in horizontal shelves or ledges 17 for the purposes her'eto accommodate the inner bent ends 22 of steel spring plates 23, the latterbeing extended inopposite directions and each secured at its outer end as by a'rivet 24. As clearly shown in the drawing, each spring plate 23 is extendedthroughaslot 25 in the corresponding end wall 16 so as to facilitate securing the spring plate in position and also to give it a longer arm. The spring plates engage the rocker at the center thereof and to maintain the rocker and springs in proper relative position, the rocker is provided on each side with a pair of vertically extending spaced" flanges 2=6-26,thus forming pockets to receive the curved ends 22 of the springs. The dotted lines in Fig. 2 indicate the position as sumed by the parts at the end of a full movement and it will be noted that the portions 27 of the rocker are adapted to bear on the horizontal shelves or ledges 17 to thereby limit the movement of the rocker.

As the rocker is displaced to either side of its normal position, it is apparent that one of the spring plates will be curled as indicated by the dotted lines at 28 in Fig. 2 and the other will be flexed upwardly and will bear on the portion 29 of the rocker. When pressure on the rocker is removed. both of the springs will act to return the rocker to normal position, the one spring by uncurling and forcing the rocker away from the corresponding end, and the other spring by hearing down on the portion 29 of the rocker to rock it toward its corresponding end.

In order to prevent the rocker from slipping duri g actuation, the base casting is provided with a proiect on or tooth 30 which engages in a corresponding recess 31 on the underside of the rocker and by which the latter is maintained in proper position, as will be understood.

I claim: g y

1. In a. side bearing for railway cars and the like, the combination with a hollow retaining member, of a rocker within said retaining member, said rocker having concen ric upper and lower curved bearing surfaces and recessed on its sides intermediate the said curved bearing surfaces, and independent spring means on opposite sides of said rocker extended into said recesses and adapted, to return the rocker to normal position after each actuation thereof.

2. In a side bearing of the character described the combination With a retaining casting, of a rocker mounted within said casting, and a pair of independently mounted springs disposed in alinement With each other on diametrically opposite sides of said rocker, both of said springs always acting in unison to effect return movements of the rocker to central position after each actuation.

3. In a side bearing of the character described, the combination with a hollow base member, of a rocker mounted Within said member. and a. pair of independenth mounted plate springs secured to said member, one on each side of said rockeil and pressing against the latter, for returning the rocker by pressure to normal position after each actuation.

4. In a side bearing of the character described, the combination with a hollow base casting having upstanding end Walls Copies of this patent maybe obtained for five cents each, by addressing the Commissioner of Patents. Washington, D. C. i 

